张建伟,王诺成,冯颖,张学良

• 1:沈阳化工大学能源与动力工程学院

摘要(Abstract)：

利用平面激光诱导荧光技术(PLIF)测量了水平三向撞击流反应器内液体混合时变化的二维浓度场,发现了其内部存在两种不同的径向流型:漏斗径向射流和自由径向射流。借助径向射流偏转角β对两种流型的变化规律进行了探索,实验结果表明等效喷嘴间距L*=1D时,偏转角变化范围Δβ很小;L*增大到2D时,Δβ急剧增大,出现峰值。当L*继续增大到3D、4D和5D时,Δβ略微下降,最终趋于稳定。流速u的变化对Δβ的影响较小。小喷嘴直径D工况下,最佳喷嘴间距为L*=2D或L*=3D;中等喷嘴直径D工况下,最佳喷嘴间距为L*=2D。通过计算离析度IOS得到完全混合所需时间t,发现Δβ越大,混合所需时间t越短,混合效果越好。

关键词(KeyWords)： 水平三向撞击;平面激光诱导荧光技术;径向射流偏转角;浓度场

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21476141);; 辽宁省自然科学基金(201202174,20102179)

作者(Author): 张建伟,王诺成,冯颖,张学良

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